I got a few sticks of PNY branded 256MB DDR ram. These are the complete info's I was able to assemble: Manufacturer: PNY Certified Module: No Module ID: PNY053 Part #: 6432WKDXA8G09TWK-OX0 MB: 256MB Config: 32M x 64 DRAM: Elixir DRAM Part #: N2DS25680AT-75B Rev. A PCB Part: PD88R1 Rev. 2.1 PCB_layer_count: 6 Layer Module Info: Unbuffered, NON-ECC, 266mhz, DDR DIMM Cas Latency: 2.5 Assembly Type: Single Board/Single Sided Low Profile: YES Actual Height: 31.85 Manufacturer: PNY Module ID: PNY052 Certified Module: No Part #: 6432ZKDXA4G17TWK-OF1 MB: 256MB Config: 32M x 64 DRAM: Samsung DRAM Part #: K4H280838C-TCB0 Rev. C PCB Part: M381L3313T1 Rev. 1.0 PCB_layer_count: 6 Layer Module Info: Unbuffered, NON-ECC, 266mhz, DDR DIMM Cas Latency: 2.5 Assembly Type: Single Board/Double Sided Low Profile: YES Actual Height: 31.80 The Samsung stick has 16 chips and the elixir has only 8. Contrary to many I am not going to overclock, so speed is not an issue for me (both sticks are not certified anyhow, whatever that means). But I want to use as much of this memory on a motherboard as possible/stable. I read that most motherboards can only support 3 sticks and are unstable with four. Now the question I have is in regards of single vs double sided: Which one of these is generally better for the maximum memory? Isn't it true that double sided sticks impose more physical drag (in terms of capacity and inductivity) on the signals? Please knowledged opinions only, I read through zillion of guesses and believes via google.